查询词典 three parts

"Each ball bearing has three main parts: two grooved, ringlike races and a number of balls."

球轴承有三个主要零件，即两个带有沟槽的套圈和许多球。

The wood last for tiny three-inch shoes. There are two parts. The fist part is Pointed shoes toe and Arched instep. The second part is hemicycle stake.

制作三寸金莲鞋用的木楦头，分为前后二块，鞋前端木雕刻尖头、弓的脚背；后帮跟为半圆形的木柱，二块木雕合拼就成为一个完整的三寸金莲鞋木楦。

According to the studied results at present, the studied objects are mainly thin plate and beam about sound radiation mode, a method computed sound radiation mode of complex structure is presented in this dissertation, according to the results of the previous two chapter, a theoretical method to solve acoustical radiation mode and acoustical radiation efficiency of complex structure by boundary element method and acoustical radiation theory is posed, the acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regard to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. According to results of the form three chapter, the structure sound radiation sensitivity is studied in detail, the sound radiation power of structure can be expressed as positive Hermitian quadratic form, the sound radiation sensitivity can be expressed as two parts by partial differential with respect to design variable, which are sensitivity of boundary velocity and impedance matrix, combined with the theory of FEM and BEM, the structure sound radiation can be translated to the analysis of structure dynamic sensitivity and impedance matrix sensitivity. The theory posted in this dissertation is tested by the FEM software ANSYS and the software AAS programmed by author.

在前几章的基础上，通过结构声辐射的模态理论对结构的声辐射的机理进行了深入地探讨，针对目前声辐射模态的研究对象主要是简单的板和梁类结构，提出了一种计算复杂结构声辐射模态的方法，利用前两章研究所得的结论，将边界元方法与广义特征值的理论结合起来研究了复杂结构的声辐射模态与声辐射效率，先将结构的声辐射功率表示为一个正定的厄米特二(来源：ABb7C论文0909网www.abclunwen.com)次型，运用广义特征值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

Only parts of chromosomes showed C-band positive, the C-band heterochromatin was located in three regions.

结果表明，黄颡鱼只有部分的染色体呈现阳性C-带，可分为三类，其中NORs区是染色最深、染色面积最大的区域，为深染居间C-带。

The emulational machine hexapod has three major parts which are sensorial module , judgement module and reaction module .

本次实验的仿真机器昆虫原来就具备了主要是感觉模块、判断模块、反应模块三大模块。

In this paper, high-power system, control system and communication system are introduced as three main parts.

本文工作分为强电系统、控制系统和通信系统三个部分。

United States General Motors, Ford and Chrysler vehicles are the three major difficulties, Hofer Wright said: If so much of the enterprise declared bankruptcy, is bound to auto parts supplier great impact.

针对美国通用、福特和克莱斯勒三大车商的困境，赖特霍费尔说：如果如此之大的企业都宣布倒闭，必将对汽车零配件供应商构成巨大冲击。

This thesis is composed of two parts: the first deals with iconography, the second with three specific case studies.

对这一课题，我以图像谱系的建立和图像分析的方法入手，对图像的出典、名称、样式的形成及变体进行尝试性的分析。

This chapter is divided into three major parts: input/output, file system, and storage allocation.

本章的内容包括3个主要部分：输入/输出、文件系统和存储分配。

An instruction that contains three address parts. The plus one address is the address of the next

一种包含三个地址部分、加上一个下一条要执行指令的地址的指令。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。